<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>Set control point callback</title>

 </head>
 <body><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.gupnp-control-point-browse-stop.html">gupnp_control_point_browse_stop</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.gupnp-control-point-new.html">gupnp_control_point_new</a></div>
 <div class="up"><a href="ref.gupnp.html">Gupnp 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div><hr /><div id="function.gupnp-control-point-callback-set" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">gupnp_control_point_callback_set</h1>
  <p class="verinfo">(PECL gupnp &gt;= 0.1.0)</p><p class="refpurpose"><span class="refname">gupnp_control_point_callback_set</span> &mdash; <span class="dc-title">Set control point callback</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.gupnp-control-point-callback-set-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">bool</span> <span class="methodname"><strong>gupnp_control_point_callback_set</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$cpoint</code></span>
   , <span class="methodparam"><span class="type">int</span> <code class="parameter">$signal</code></span>
   , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$callback</code></span>
   [, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$arg</code></span>
  ] )</div>

  <p class="para rdfs-comment">
   Set control point callback function for signal.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.gupnp-control-point-callback-set-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">cpoint</code></em></dt>

     <dd>

      <p class="para">
       A control point identifier, returned by <span class="function"><a href="function.gupnp-control-point-new.html" class="function">gupnp_control_point_new()</a></span>.
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">signal</code></em></dt>

     <dd>

      <p class="para">
       The value of signal. Signal can be one of the following values:
       <dl>

        
         <dt>
<strong><code>GUPNP_SIGNAL_DEVICE_PROXY_AVAILABLE</code></strong></dt>

         <dd>

          <span class="simpara">
           Emitted whenever a new device has become available.
          </span>
         </dd>

        
        
         <dt>
<strong><code>GUPNP_SIGNAL_DEVICE_PROXY_UNAVAILABLE</code></strong></dt>

         <dd>

          <span class="simpara">
           Emitted whenever a device is not available any more.
          </span>
         </dd>

        
        
         <dt>
<strong><code>GUPNP_SIGNAL_SERVICE_PROXY_AVAILABLE</code></strong></dt>

         <dd>

          <span class="simpara">
           Emitted whenever a new service has become available.
          </span>
         </dd>

        
        
         <dt>
<strong><code>GUPNP_SIGNAL_SERVICE_PROXY_UNAVAILABLE</code></strong></dt>

         <dd>

          <span class="simpara">
           Emitted whenever a service is not available any more.
          </span>
         </dd>

        
       </dl>

      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">callback</code></em></dt>

     <dd>

      <p class="para">
       The callback function for the certain signal. Typically, callback function 
       takes on two parameters. The <em><code class="parameter">proxy</code></em> parameter&#039;s 
       identifier being the first, and the <em><code class="parameter">arg</code></em> second. 
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">arg</code></em></dt>

     <dd>

      <p class="para">
       User data for <em><code class="parameter">callback</code></em>. 
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.gupnp-control-point-callback-set-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.gupnp-control-point-callback-set-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4253">
    <p><strong>Example #1 Create new UPnP context and start browsing</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #007700">function&nbsp;</span><span style="color: #0000BB">device_proxy_available_cb</span><span style="color: #007700">(</span><span style="color: #0000BB">$proxy</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$arg</span><span style="color: #007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">gupnp_device_info_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$proxy</span><span style="color: #007700">);<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$type&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$info</span><span style="color: #007700">[</span><span style="color: #DD0000">'device_type'</span><span style="color: #007700">];<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$location&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$info</span><span style="color: #007700">[</span><span style="color: #DD0000">'location'</span><span style="color: #007700">];<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"Device&nbsp;available:\n"</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$type</span><span style="color: #007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"location:&nbsp;%s\n"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$location</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;Create&nbsp;the&nbsp;UPnP&nbsp;context&nbsp;*/<br /></span><span style="color: #0000BB">$context&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">gupnp_context_new</span><span style="color: #007700">();<br /><br />if&nbsp;(!</span><span style="color: #0000BB">$context</span><span style="color: #007700">)&nbsp;{<br />&nbsp;die(</span><span style="color: #DD0000">"Error&nbsp;creating&nbsp;the&nbsp;GUPnP&nbsp;context\n"</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;We're&nbsp;interested&nbsp;in&nbsp;everything&nbsp;*/<br /></span><span style="color: #0000BB">$cp&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">gupnp_control_point_new</span><span style="color: #007700">(</span><span style="color: #0000BB">$context</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"ssdp:all"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">gupnp_control_point_callback_set</span><span style="color: #007700">(</span><span style="color: #0000BB">$cp</span><span style="color: #007700">,&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">GUPNP_SIGNAL_DEVICE_PROXY_AVAILABLE</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'device_proxy_available_cb'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Start&nbsp;for&nbsp;browsing&nbsp;*/<br /></span><span style="color: #0000BB">gupnp_control_point_browse_start</span><span style="color: #007700">(</span><span style="color: #0000BB">$cp</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>



 <div class="refsect1 errors" id="refsect1-function.gupnp-control-point-callback-set-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   Issues E_WARNING with not valid callback function. 
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.gupnp-control-point-callback-set-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.gupnp-control-point-new.html" class="function" rel="rdfs-seeAlso">gupnp_control_point_new()</a> - Create a new control point</span></li>
    <li class="member"><span class="function"><a href="function.gupnp-control-point-browse-start.html" class="function" rel="rdfs-seeAlso">gupnp_control_point_browse_start()</a> - Start browsing</span></li>
   </ul>
  </p>
 </div>


</div><hr /><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.gupnp-control-point-browse-stop.html">gupnp_control_point_browse_stop</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.gupnp-control-point-new.html">gupnp_control_point_new</a></div>
 <div class="up"><a href="ref.gupnp.html">Gupnp 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div></body></html>
